Audio has benefits over video because some people do not feel comfortable in front of a camera, said Andy Mabbett, the Wikipedia volunteer who came up with the idea and is leading efforts to add more voices to people's Wikipedia pages.

The voice is also a "very personal thing," Mabbett said in an interview with USA TODAY Network.

"If you think about the people you know, if you hear their voice, it's very immediate, even more so than seeing a photograph of them," Mabbett said.